(19)

(11)

EP 3 837 729 A1

(12)

(43) Date of publication: 23.06.2021 Bulletin 2021/25 (21) Application number: 20729153.5 (22) Date of filing: 20.05.2020

(51) International Patent Classification (IPC):  H01M 4/134(2010.01) H01M 4/38(2006.01) H01M 4/66(2006.01) H01M 4/36(2006.01) H01M 4/587(2010.01) H01M 10/0525(2010.01) (86) International application number: PCT/GB2020/051227 (87) International publication number: WO 2020/234586 (26.11.2020 Gazette 2020/48)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 20.05.2019 GB 201907117 (71) Applicant: Nexeon Limited Abingdon, Oxfordshire OX14 4SB (GB)	(72) Inventors: MASON, Charles Abingdon Oxfordshire OX14 4SB (GB) FRIEND, Chris Wittenham Oxfordshire OX14 4QD (GB) MACKLIN, William Abingdon Oxfordshire OX14 4SB (GB) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)